Erasing-machine.



PATENTED JAN. 21, 1908.

P. W. HERMAN ERASING MACHINE.

APPLICATION FILED AUG.21.1907.

fiven find WLzrman;

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Specification of Letters Patenii.

Patented Jan. 21, 1908.

Application filed August 21, 1907 Serial No. 389.474

T 0 all whom it may concern:

Be it known that l, FRANK W. LlEI-EMAN, citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Erasing-Machines, of which the following is a speciiicction.

lily invention relates to eroscrs, ordevices for removing pencil and Oil'lfll' marks from paper. its objeci is to provide a simple, practical machine for the use of. dmftsmen. and others, in rapidly cleaning paper or removing pencil or other marks the inveiiti on being particularly designed for use in draftingrooins, Where considerable time is now lost in erasing or cleaning by hand.

The invention. consists of the parts and. the Construction end combination of parts es hereinaiier more fully desci'ibecl and claimed,

having reference to the accompanying dre ings, in which the figure illus oi'eubes e. longitudinolsec'tionel View partially in clove-tics, of an erasing machine embodying my iIlY 8i1- Lion.

A is flexible shaft of any suitable (.l-e sclipiion hsving bile usual flexible casing 2 and operated from any suitable source oi pews: es, for instance, the moi-or 3. Que end o Bill-3 J'Jl able shale iS secured to the arbor carries the rubber disk or emse 5.

cross-lie w 7 in the me ii ve l2 lo arbor. le cl en; ep roor to lllL'LliE it in the will: the owl flanges e Lo pennii the iiisil'ljf Llililg oil of erasing disk 5 ":2 other by any soil;-

7 on the arbor pose g perforations in and clamp-1211i l0, eede 'outei" envl oi the ""Illl o1: frame 0:" cross-howl 3 i :1 luumlc, ll, and l.ll(! oppo- 'llSllWl with the luding device 1 i of he lllilllt'. il-f-iecnelilc.

he motor end of the flexible casing 2 is ei 'ech d. to a. thinible l3 secured to the mo- I The flexible shelf A is connected with the motor-shaft 14, and errengemenfi is made for the lengthwise adjustment of the flexible shaft by the following means: A sleeve 15 is secured to the end Of'tllO motor shaft 1e by a key 16. The end of the flexible shaft is fixedly secured to a short rod section 17' litting the sleeve 15 and having a feather-Way 18, in which the guide screw 19 carried by the sleeve 15 engages. Thus, While the sleeve 15 and flexible shaft will turn in unison with the motor shaft, the flexible shaft is I permitted all necessa y lengthwise movement in the sleeve.

' .ln operation, the flexible shaft being set in l moiion, .the tool is grasped in one hand by g the handle 11. By allowing she knob 03. l e icling end 12 o" the cool to in zo 0013csect iii'st with the paper, enables the operator to bring the erase carefully down on to the apex" and beer with any desired pressure.

ilole connections the source of 9 moved say less leifgc area 7 sheet 5*}3308 of time,

cieiole eflori, on

M t of she operrst l Vneni-Wer one 15.1., cccuoies i cci-eiillicoli es ormocli ie inveuiion ncipie enison whet .l slain eni; 1. lo. on ere U ivime ie. whicl1 lie er- 1. mine lisv -i;

vice

eraser. V L. in an musing .n'iecli'ine, ro geiy :1, frame in which the creser mounted for. A cation, sci cl 11mm: open. one side, a handle at one eml oi the frame. a ui'tliu' device on the other coal of the mg the eraser.

in on erasing machine, 2h combuission l e flexible shalt, 2 31cm le casing therefor, e

is Wom ouc, I 2- head. and connecting with the flexible shaft,

said cross heed. having handle at one end and e gnicling device at the opposite end.

4. In an erasing niechinethe coinliiine'tion of a flexible shaft, e i'iexihlecasing therefor, 21 cross-head to which one end oi the flexible casing is secured, an erasing device having an e ther portion journaled in. said cross-heed and connecting with the flexible shaft, said cross-head hevine" a, handle at one side of the axis of the ere-snag device and-having e guid ing device 8,5 the other side of said axis, and e drives it with whieh the opposite end. of the fieiiihie shaft is connected, said inst named connections comprising e sleeve se cured t0 the drive shaft, a rod. section fixed to the fit ihle shaft and fitting the sleeve,

said rod section having a,v lengthwise extending groove, and. a screw carried by the sleeve and fitting said groove.

5. In an erasing machine, the combination of a flexible shaft, a flexible casing therefor, a, cross-heed to which one end of the flexible casing is secured; an erasing device having an arbor portion journeled in said cross-head end connecting with the flexible shah, said cross-heed having laterally extending, end

flanges, a handle secured to one of thefianges, and a guiding device connected with the other flange.

in testimony whereof have hel eun'to set my hand in presence of two subscrlhmg witnesses. FRANK W. LTERIVIAN.v Wi messes v S. NOURSE, FREDERICK E. MAYNARD. 

